Saving and loading UIImage from / to a string

Question

Using the message http://www.ifans.com/forums/showthread.php?t=132024 from another question, I allow the user to enter a signature. When the user finishes entering the signature, I want to save it to the database. I want to know if it is possible to save UIImage to a string at all? And how to reload UIImage from a string?

Thanks in advance

Answer 1

Yes, you could introduce it as NSData, and then convert it to NSString:

NSData *imageData = UIImagePNGRepresentation(yourPNGImage);
NSString *imageString = [[NSString alloc] initWithBytes: [imageData bytes] length:[imageData length] encoding:NSUTF8StringEncoding];

In the case of jpeg images, you can easily use UIImageJPEGRepresentationistead UIImagePNGRepresentation.

Answer 2

UIImage Base64:

• UIImage NSData UIImageJPEGRepresentation

• NSData Base64, .

, .

• NSData Base64.

• [UIImage initWithData] UIImage.

Answer 3

NSData *data = UIImageJPEGRepresentation(Imagename, 1.0f);
NSString *imageString = [NSString stringWithFormat:@"%@",data];